/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.iotdb.db.mpp.plan.execution.config.metadata;

import com.google.common.util.concurrent.ListenableFuture;
import com.google.common.util.concurrent.SettableFuture;
import org.apache.iotdb.confignode.rpc.thrift.TDataNodeInfo;
import org.apache.iotdb.confignode.rpc.thrift.TShowDataNodesResp;
import org.apache.iotdb.db.mpp.common.header.ColumnHeader;
import org.apache.iotdb.db.mpp.common.header.ColumnHeaderConstant;
import org.apache.iotdb.db.mpp.common.header.DatasetHeader;
import org.apache.iotdb.db.mpp.common.header.DatasetHeaderFactory;
import org.apache.iotdb.db.mpp.plan.execution.config.ConfigTaskResult;
import org.apache.iotdb.db.mpp.plan.execution.config.IConfigTask;
import org.apache.iotdb.db.mpp.plan.execution.config.executor.IConfigTaskExecutor;
import org.apache.iotdb.db.mpp.plan.statement.metadata.ShowDataNodesStatement;
import org.apache.iotdb.rpc.TSStatusCode;
import org.apache.iotdb.tsfile.file.metadata.enums.TSDataType;
import org.apache.iotdb.tsfile.read.common.block.TsBlockBuilder;
import org.apache.iotdb.tsfile.utils.Binary;

import java.util.List;
import java.util.stream.Collectors;

public class ShowDataNodesTask implements IConfigTask {

    private ShowDataNodesStatement showDataNodesStatement;

    public ShowDataNodesTask() {
    }

    public ShowDataNodesTask(ShowDataNodesStatement showDataNodesStatement) {
        this.showDataNodesStatement = showDataNodesStatement;
    }

    @Override
    public ListenableFuture<ConfigTaskResult> execute(IConfigTaskExecutor configTaskExecutor)
            throws InterruptedException {
        return configTaskExecutor.showDataNodes(showDataNodesStatement);
    }

    public static void buildTSBlock(
            TShowDataNodesResp showDataNodesResp, SettableFuture<ConfigTaskResult> future) {
        List<TSDataType> outputDataTypes =
                ColumnHeaderConstant.showDataNodesColumnHeaders.stream()
                        .map(ColumnHeader::getColumnType)
                        .collect(Collectors.toList());
        TsBlockBuilder builder = new TsBlockBuilder(outputDataTypes);
        if (showDataNodesResp.getDataNodesInfoList() != null) {
            for (TDataNodeInfo dataNodeInfo : showDataNodesResp.getDataNodesInfoList()) {
                builder.getTimeColumnBuilder().writeLong(0L);
                builder.getColumnBuilder(0).writeInt(dataNodeInfo.getDataNodeId());
                builder
                        .getColumnBuilder(1)
                        .writeBinary(
                                Binary.valueOf(dataNodeInfo.getStatus() == null ? "" : dataNodeInfo.getStatus()));

                builder.getColumnBuilder(2).writeBinary(Binary.valueOf(dataNodeInfo.getRpcAddresss()));
                builder.getColumnBuilder(3).writeInt(dataNodeInfo.getRpcPort());
                builder.getColumnBuilder(4).writeInt(dataNodeInfo.getDataRegionNum());

                builder.getColumnBuilder(5).writeInt(dataNodeInfo.getSchemaRegionNum());
                builder.declarePosition();
            }
        }
        DatasetHeader datasetHeader = DatasetHeaderFactory.getShowDataNodesHeader();
        future.set(new ConfigTaskResult(TSStatusCode.SUCCESS_STATUS, builder.build(), datasetHeader));
    }
}
